A small-scale fractionation of 9 g. and a large-scale fractionation of 90 g. of a polyester were carried out. The polymer was prepared by condensation of isophthalic acid, maleic anhydride, and propylene glycol in the mole ratio 1 : 2: 3. Results from the two fractionations were in good agreement de
Column fractionation of polymers. I. Large-scale chromatography
β Scribed by Cantow, M. J. R. ;Porter, Roger S. ;Johnson, Julian F.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2007
- Weight
- 350 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0449-2994
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π SIMILAR VOLUMES
A preparative-scale elution chromatographic column is described which will fractionate 45 g. of polymer in a single operation. The size of the column is kept to manageable dimensions by reducing the temperature differential from 50 to 10Β°C. along the length of the temperature-gradient section. I t a
## Abstract **Summary:** Access to sufficiently large amounts of material with adequate molecular and chemical uniformity from polydisperse natural products or synthetic materials has been a longβstanding challenge to polymer scientists. We have developed a broadly applicable preparative fractionat